Main changes in BV Rules for Steel Ships

Transcription

1 Main changes in BV Rules for Steel Ships Main changes in Bureau Veritas Rules for the Classification of Steel Ships (January 2018 edition, into force on January 1st, 2018), regarding the previous edition (July 2017) are described as follows. Rules History January 2018 edition into force on January 1st, 2018 Contents Amendments to Parts A, B, C, D, E and F [NR 467 DT Amd 014 E January 2018] Previous edition: July 2017 into force on July, 1st 2017 Contents Part A - Classification and Surveys Part A - Classification and Surveys [NR 467.A1 DT R14 E July 2017] [NR 467.A1 DT R14 E July 2017] Part B - Hull and Stability Part B - Hull and Stability [NR 467.B1 DT R09 E July 2017]] [NR 467.B1 DT R09 E July 2017]] Part C - Machinery; Electricity, Automation Part C - Machinery; Electricity, Automation and Fire Protection and Fire Protection [NR 467.C1 DT R09 E July 2017] [NR 467.C1 DT R09 E July 2017] Part D - Service Notations Part D - Service Notations [NR 467.D1 DT R09 E July 2017] [NR 467.D1 DT R09 E July 2017] Part E - Service notations for Offshore Service Vessels and Tugs Part E - Service notations for Offshore Service Vessels and Tugs [NR 467.E1 DT R00 E July 2017] [NR 467.E1 DT R00 E July 2017] Part F - Additional Class Notations Part F - Additional Class Notations [NR 467.F1 DT R09 E July 2017] [NR 467.F1 DT R09 E July 2017] Classification and Surveys - PART A Implementation of IACS Unified Requirements UR Z10.2 (rev. 33) and UR Z10.5 (rev. 16): New requirements for SCF for bulk carriers Pt A, Ch 4, UR Z10.4 (rev. 14): New requirements for SCF for oil tankers Pt A, Ch 4, Sec 3 UR Z23 (rev. 6): New requirements for SCF for hull survey for new construction Pt A, Ch 3, Sec 7 UR Z25 (new): New requirements for periodic surveys of fuel installations on ships other than liquefied gas carriers utilizing gas or other low flash point fuels Pt A, Ch 3, Sec 7. Service notations New services notations: Liquefied gas carrier - FSRU and FSRU (Reference is made to NR645) Pt A, Ch 1, and Ch 4, Sec 5 Existing service notations : Self-unloading bulk carrier ESP possibility to add service features heavycargo and nonhomload Pt A, Ch 1,. 1/5

2 Additional service features New additional service feature: (Block-loading) for bulk carrier ESP with CSR and BC-A notations (Reference is made to CSR Rules) Pt A, Ch 1, SW-Registry (about computerized systems reference is made to Pt 3, Ch 3, Sec 3) Pt A, Ch 1, Existing additional service feature: (LPG), (CNG) or (LNG): additional notations to be added after dualfuel or gasfuel Pt A, Ch 1, SPxxx SRTP: changes in conditions of application Pt A, Ch 1,. Additional class notations New additional class notations: STABLIFT (concerning stability during lifting operations) Pt A, Ch 1, Existing additional class notations: GAS PREPARED (AE) and GAS PREPARED (B) (the additional notation GAS PREPARED (AEB) is split into these 2 notations) Pt A, Ch 1,. Miscellaneous Reference of requirements for REGAS notation (NR 645 instead of NR 542) Pt A, Ch 1, Delete references in Tab 1 for SPxxx notation Pt A, Ch 1, Correct rule requirement in Tab 1 for POLAR CATxxx notations Pt A, Ch 1, Add missing reference to requirements of surveys for LNG bunkering ships Pt A, Ch 1, and Ch 4, Sec 5 Correct wording and add missing reference to requirements for maintenance of self-elevating notation (for OCB, OCV and OSV) Pt A, Ch 1, Add missing reference to requirements for maintenance of pipe laying notation Pt A, Ch 1, and Ch 4, Sec 8 Remove reference to standby rescue for special service notation Pt A, Ch 1, Remove navigation notations for yacht and add a reference to NR 500 Pt A, Ch 1, Modify the definition of crew boat and remove 2 notes Pt A, Ch 1, Add the mandatory assignment of SDS notation to semi-submersible cargo ship Pt A, Ch 1, Modify the definition of SDS Pt A, Ch 1, Add missing reference to requirements for maintenance of BATTERY SYSTEM notation Pt A, Ch 1, Modify the conditions for requirements of SRTP to complete SPxxx Pt A, Ch 1, Add missing reference to requirements for maintenance of ELECTRIC HYBRID notation Pt A, Ch 1, Add missing bullet for last paragraph of STABLIFT Pt A, Ch 1, Add missing reference to diving systems and pipe laying Pt A, Ch 4, Sec 8 Modify the requirement for annual survey of cable laying ship Pt A, Ch 4, Sec 8 Add the missing article for pipe paying ship surveys Pt A, Ch 4, Sec 8 Add the new ELECTRIC HYBRID notation in the Table 1 Pt A, Ch 5, Sec 1 Add new survey requirements (annual and renewal) for DP systems Pt A, Ch 5, Sec 10 Correct the mistyping CBRN-WAHDOWN in the general paragraph of CBRN ships Pt A, Ch 5, Sec 10 Correct the mistyping CBRN-WASHDOWN in the last class renewal survey requirement Pt A, Ch 5, Sec 10 Add the notation ELECTRIC HYBRID in the list at the beginning of section and new article for corresponding surveys Pt A, Ch 5, Sec 10. Hull Structure - PART B Ordinary stiffeners plastic section modulus General update of the calculation method as per IACS UR I Pt B, Ch 4, Sec 3, [3.4.3]. Pressure on exposed deck Clarification of exposed deck pressure application Pt B, Ch 5, Sec 5, [3]. 2/5

3 Sea chest design pressure Introduction of a minimum pressure due to the cleaning system Pt B, Ch 5, Sec 5, [3]. Still water deck pressure Values indicated in tables are now minimum values Pt B, Ch 5, Sec 6, [7] & [8]. Buckling of stiffeners perpendicular to the compression Deleted obsolete requirement Pt B, Ch 7,, [4.4.2]. Allowable contact pressure at connexion between pillars and decks New requirement Pt B, Ch 7, Sec 3, [7.2.7]. Calculation models for primary supporting members subjected to wheeled loads Clarification of the applicability of 3D beam models or finite element models depending on the ship length Pt B, Ch 7, App 2. Stern impact pressure Correction for stern slamming pressure calculation Pt B, Ch 8,, [4.2.1]. Propeller shaft bossing Clarification Pt B, Ch 8,, [6.5.1]. Doors and windows in side shell Verification of these openings when located partly or totally below the deepest equilibrium waterline Pt B, Ch 8, Sec 6, [2.1], [4.2.3], [5.1.1] and Pt B, Ch 8, Sec 10, [3.3]. Lower Rudder stock ends Deletion of criteria for minimum diameter of massive part Pt B, Ch 9, Sec 1, [5.3.4]. Nozzles web rings Removed minimum number of rings but added section modulus criteria Pt B, Ch 9, Sec 1, [10.1.2]. Welding of ordinary stiffeners with primary members Clarification of reference thickness PT B, Ch 11, Sec 1, [2.3]. Tank testing General update according to IACS UR S14 Rev.6 - Pt B, Ch 11, Sec 3. Machinery - PART C Additional service feature SPxxx or SPxxx-capable Update/clarification of applicable requirements according to the number of persons on board. Exhaust gas cleaning systems Update in line with IACS UR M77 Pt C, Ch 1, Sec 10, [18.5.4]. Steering gear design Clarification of steering gear control system requirements in line with IACS UI SC94 Rev.2 Ch 1, Sec 11, [2.3], [2.4] and [2.7]. Electricity and Automation - PART C Battery ventilation Ch 2 Clarification for the dimensioning of natural ventilation for batteries Ch 2, Sec 11 [6.5.2]. 3/5

4 Fire Protection, Detection and Extinction - PART C Containment of fire Ch 4, Sec 5 Included IMO interpretation regarding the structural fire protection requirements for a navigation locker adjacent to the wheelhouse (IMO MSC.1/Circ.1581). Protection of vehicle, special category and ro-ro spaces Extinguishing fixed water based fire extinguishing systems Pt C, Ch 4, Sec 12, [5.1.2]. Service Notations - PART D Steering gear design - Oil Tankers, FLS Tankers, chemical tankers and gas carriers Clarification of steering gear control system requirements in line with IACS UI SC94 Rev.2 Ch 7, Sec 4, [4] Also applicable to gas carriers and chemical tankers, by reference to rules applicable to tankers. Oil tankers Ch 7 Rewording of several requirements for clarification. Chemical tankers Ch 8 Clarification of the localization requirement for chain lockers (out of hazardous areas) Ch 8, Sec 3 [1.1.2] Temperature indication limit changed from 45 C to 90 C Ch 8, Sec 7, [1.1.3] Clarification of the NDT requirements for cargo piping of chemical tankers Ch 8, Sec 5. Liquefied gas carriers Ch 9 Clarification of applicable requirements for liquefied gas carriers using LPG as fuel Ch 9, Sec 1, [1.1] Clarification of requirements for the secondary barrier Ch 9, Sec 4 [2.4.1] Clarification of requirements of PRV for prismatic tanks as per IACS UI GC19 Ch 9, Sec 8 [4.1.1] Clarification of requirements for cargo tank s high level alarm as per IACS UI GC18 Ch 9, Sec 13 [3.1.6] Temperature indication devices requirement clarified (Ch9, Sec 13, [5.1.2] moved to [7.2.3]) Clarification of the assumptions to be considered when assessing the inertial pressure of liquefied gas tanks. The pressure in type A tanks is to be assessed considering a 3D calculation Ch 9, App 1. Passenger ships Ch 11 Flooding detection systems for passenger ships carrying 36 or more persons Ch 11, Sec 5, [1.3]. Ro-ro passenger ships Ch 12 Socket outlets in garage spaces to be IP56 Ch 12, Sec 3 [3.4] Flooding detection systems for passenger ships carrying 36 or more persons Ch 12, Sec 4, [1.4]. Pontoon-crane Ch 14 Reference is made to Pt E, Ch 8, Sec 3 for stability criteria during lifting operations Ch 14,, [2.2] Reference is made to Pt E, Ch 8, Sec 4 for structural assessment of the foundations of the lifting appliance - Ch 14,, [5.3]. Fishing vessels Ch 15 Sill heights are specified (ships not covered by Load Line) Ch 15, Sec 1, [3.4.1]. Notations for OSV and Tugs - PART E Tugs Ch 1 General updates and fire safety Section 1 General update of stability criteria Section 2 Clarifications / corrections Section 2. 4/5

5 Anchor Handling vessels Ch 2 Update of stability requirements Lifting units Ch 8 Implementation of IMO Intact Stability code amendments (MSC 97/22/Add.1) Ch 8, Sec 3 New notation STABLIFT applicable to any ship using a crane with significant heeling moment Ch 8, Sec 3 New alternative damage stability criteria during lifting operations (non mandatory). Semisubmersible cargo ships Ch 9 Additional class notation SDS and damage stability assessment is mandatory Ch 9, Sec 3 Clarification of ballast pressure calculation in case of overflow tanks Ch 9, Sec 4, [1]. Accommodation units Service feature SPxxx or SPxxx-capable Ch 11 Clarification of threshold number of persons on board for definition of applicable requirements Ch 11, Sec 4, Tab 1. Additional Class Notations - PART F AUT-UMS Ch 3 Clarification of requirements for fire detection in boiler supply casings and exhausts as per IACS UI SC283 Pt F, Ch 3, Sec 1 [3.2]. SYS-COM Ch 4, Sec 3 Update and clarifications Added security recommendations. Propellers in ice Ch 8, Sec 3 Correction of typo mistake in the definition of force for load case applicable to open and to ducted propellers (Tab 4 and Tab 5, load case 5). Cleanship Ch 9, Sec 3 Update in line with IACS UR M77 Ch 9,, [2.9.5]. Dynamic Positioning (DYNAPOS) Pt F, Ch 11, Sec 6 General update in line with IMO MSC.1 Circ Cold Weather Conditions Pt F, Ch 11, Sec 11 The weight distribution of ice accretion is to be applied on the full length of the ship as requested by the Polar Code / Pt F, Ch 11, Sec 11, [5.2.2]. HEL Pt F, Ch 11, 0 Clarification of applicable scope of CAP /5